When would you ask for a raise?

If you feel like you should be getting paid more considering what you have taken on at your job and other co workers when would you ask? Should I wait for my two year mark which is in February? I got a raise from $12/hr to $14/hr after my 3 months. Is it too soon?

I’m 24 and would like to work on getting an apartment but obviously can’t due to what I’m making.